Heuristic Optimization of Culture Conditions for Stimulating Hyper-Accumulation of Biomass and Lipid in Golenkinia SDEC-16

Changliang Nie, Liqun Jiang, Qingjie Hou, Zhigang Yang, Ze Yu and Haiyan Pei
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Changliang Nie: School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
Liqun Jiang: School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
Qingjie Hou: School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
Zhigang Yang: School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
Ze Yu: School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
Haiyan Pei: School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China

Energies, 2020, vol. 13, issue 4, 1-15

Abstract: Overproduction of biomass and hyper-accumulation of lipids endow microalgae with promising characteristics to realize the cost-effective potential of advanced bioenergy. This study sought to heuristically optimize the culture conditions on a rarely reported Golenkinia sp. The results indicate that Golenkinia SDEC-16 can withstand the strong light intensity and grow in a modified BG11 medium. The optimal culture conditions for the favorable tradeoff between biomass and lipid accumulation were suggested as follows, 25,000 lux of light intensity, 9 mM of initial nitrogen concentration, and 20 mM of initial sodium chloride concentration. Under these conditions, the biomass concentration and productivity reached 6.65 g/L and 545 mg/L/d, and the synchronous lipid content and productivity reached 54.38% and 296.39 mg/L/d. Hypersalinity significantly promoted lipid contents at the cost of biomass and resulted in an increase of cell size but loss of spines of Golenkinia SDEC-16. The results shed new light on optimizing biomass and lipid productivity.

Keywords: Golenkinia SDEC-16; Biomass concentration; High lipid content; Culture conditions; Carotenoids (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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